<template>
  <div id="detail">
    <nav-bar>
      <div slot="left" @click="backClick">
        <img src="../../../assets/images/tabbarimg/home.png" alt="">
      </div>
      <div slot="center" class="title">
        <div v-for="(item,index) in titles"
             class="title-item"
             :class="{active:index === currentIndex}"
             @click="titleClick(index)"
        >{{ item }}</div>
      </div>
    </nav-bar>
  </div>
</template>

<script>
  import NavBar from 'content/navbar/NavBar'
    export default {
        name: "DetailNavBar",
      components:{
        NavBar
      },
      data() {
        return{
          titles:['商品','参数','评论','推荐'],
          currentIndex:0
        }
      },
      methods:{
        titleClick(index){
          this.currentIndex = index,
            this.$emit('titleClick',index)
        },
        backClick(){
          this.$router.go(-1)
        }
      }
    }
</script>

<style scoped>
 .title{display: flex}
  .title-item{flex: 1}
  .active{
    color: var(--color-high-text);
  }
</style>
